Cooling hard hat



FIG. 1 is a perspective view of a cooling hard hat showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a side view thereof, the opposite side view being a mirror image thereof; and,

FIG. 5 is a front view thereof. 

The ornamental design for a cooling hard hat, as shown and described. 